export function formatDate(timestamp) {
    // 补全为13位
    　timestamp =timestamp.replace(/\-/g, "/");
    timestamp=Date.parse(timestamp);
    let arrTimestamp = (timestamp + '').split('');
    for (let start = 0; start < 13; start++) {
      if (!arrTimestamp[start]) {
        arrTimestamp[start] = '0';
      }
    }
    timestamp = arrTimestamp.join('') * 1;
    let minute = 1000 * 60;
    let hour = minute * 60;
    let day = hour * 24;
    let month = day * 30;
    let now = new Date().getTime();
    let diffValue = now - timestamp;
    // 如果本地时间反而小于变量时间
    if (diffValue < 0) {
      return '不久前';
    }
    // 计算差异时间的量级
    let monthC = diffValue / month;
    let weekC = diffValue / (7 * day);
    let dayC = diffValue / day;
    let hourC = diffValue / hour;
    let minC = diffValue / minute;
    // 数值补0方法
    let zero = function (value) {
      if (value < 10) {
        return '0' + value;
      }
      return value;
    };
    // 使用

    if (monthC > 4) {
      // 超过1年，直接显示年月日
      return (function () {
        let date = new Date(timestamp);
        return date.getFullYear() + '年' + zero(date.getMonth() + 1) + '月' + zero(date.getDate()) + '日';
      })();
    } else if (monthC >= 1) {
      return parseInt(monthC) + '月前';
    } else if (weekC >= 1) {
      return parseInt(weekC) + '周前';
    } else if (dayC >= 1) {
      return parseInt(dayC) + '天前';
    } else if (hourC >= 1) {
      return parseInt(hourC) + '小时前';
    } else if (minC >= 1) {
      return parseInt(minC) + '分钟前';
    }
    return '刚刚';
  }
